X b bluing-paper



UNITED STATES.

PATENT OFFIC GEORGE A. OONANT, OF LITTLETON, MASSACHUSETTS.

-BLUlNG-PAPER.

SPECIFICATION forming part of Letters Patent No. 302,544, dated July 29,1884-.

Application filed September 5, 1883. (No specimens.)

To all whom it may concern Be it known that I, GEORGE A. CONANT, acitizen of the United States, residing at Littleton, in the county ofMiddlesex and Commonwealth of Massachusetts, have invented a new anduseful composition and process for the rapid and economical manufactureof bluing of superior qualityfor laundry and other p11rposes,byapplyingthe bluing more quickly than it has ever been done before to paper, andby making it more adhesive to paper and quicker to dissolve. in water,and so more valuable and useful than any other similar preparation,which process is more fully set forth in the following specification.

In carrying out my invention, take eight pounds Prussian blue, one poundoxalic acid, five pounds granulated sugar, eighteen quarts of water, andthe desired quantity of sheets of Manila paper of medium thickness.Dissolve the oxalic acid in five quarts cold water, and let it standover night, or about twelve hours. Strain the acidulated water and mixwith it eight quarts clear water. Then add the Prussian blue by stirringit in very slowly,

and then, after it has stood an hour or more, strain into anothervessel. Then dissolve the sugar in five quarts cold water by stirringboth together. Then pour the sirup into the liquid containing thebluing, and stir the whole thoroughly. Then dip the paper, sheet bysheet,into the preparation, and hang them up to dry, and when dry outinto sheets of the desired size for packing in envelopes.

I am aware that bhiing has before been so prepared as to be made toadhere to paper and dissolve in water; but it has been done

